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[EN] Forty eight lactating non-pregnant New Zealand White
does 9 months of age and weighing 3468 g and in the third parity
were used in the present study. The does were randomly divided into
4 equal groups of 12 each ...[+]

[EN] Forty eight lactating non-pregnant New Zealand White
does 9 months of age and weighing 3468 g and in the third parity
were used in the present study. The does were randomly divided into
4 equal groups of 12 each and were mated twice. The four groups of
the pregnant does were given an unsupplemented diet (control) or a
diet supplemented 5 mg folie acid (FA), 80 mg Fe (as Ferrous
Sulfate, FeS04) or 5 mQ FA + 80 mg Fe/kg dry matter, respectively,
fOr a period of two parities with two lactation cycles. All treatments
had increased (P<0.05) maternal weight at 14, 21 and 28 days of
gestation, as comparad to the control group. In does receiving FA or
Fe, both litter size at birth and at weaning increased (P<0,05), while
FA + Fe group insignificantly increased litter size at weaning only.
Total mortality of young rabbit was significantly (P<0.05) lower in all treatments. FA, Fe, and FA+ Fe treatments increased (P<0.05) litter
weight at weaning (5080, 3730 and 3160, respectively vs .. 2069 g)
and improved (P<0.05) kit weight at weaning (666, 598 and 638,
respectively vs 559 g) comparad to the control group. On day 28 of
gestation, plasma progesterone level is increased in FA
supplemented does and both progesterone and estradiol-171} levels
are increased in does supplemented with Fe treatment. Plasma
concentrations of T4, estradiol-171} and progesterone were
significantly higher on day 28 of gestation in does supplemented with
FA + Fe. Total milk yield/doe/lactation cycle was significantly higher
in all treated groups than in the control (P<0.05). lt was concluded
that the supplementation of FA or FA + Fe to a basal diets of
pregnant does will improve their reproductlve performance.[-]